Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Wataru Kokuyama"'
Publikováno v:
Measurement: Sensors, Vol 18, Iss , Pp 100136- (2021)
We propose a novel signal-processing technique to avoid cyclic errors in laser interferometers instead of an elliptical fitting, known as the Heydemann correction. It is based on a simple superposition of background motions to average out the effect
Externí odkaz:
https://doaj.org/article/1541d3b218b74a76979717253353a9e3
Publikováno v:
Measurement: Sensors, Vol 18, Iss , Pp 100138- (2021)
Micro-vibration is an important measurement target in various fields, such as infrastructure health monitoring or satellite operation. In this study, the effect of background noise in calibrating vibration sensors at small amplitudes is discussed. Th
Externí odkaz:
https://doaj.org/article/2d5f09e5838345f88be66909dc1e770b
Publikováno v:
Measurement: Sensors, Vol 18, Iss , Pp 100140- (2021)
In this study, we developed an automated, multi-point primary vibration calibration system using a two-axis positioning stage and a laser Doppler vibrometer. The proposed system offers low-cost, convenient, and automated multi-point vibration calibra
Externí odkaz:
https://doaj.org/article/93a39f8e70a841c7bb99c5abeb067f74
Publikováno v:
Measurement: Sensors, Vol 18, Iss , Pp 100301- (2021)
Evaluation of responsiveness in the high frequency region of a laser Doppler vibrometers (LDV) is strongly demanded in industrial fields such as MEMS and biotechnology. Therefore, in order to obtain the responsiveness of the LDV in the frequency rang
Externí odkaz:
https://doaj.org/article/e7c423d37a144a278c588c25e460bbd2
Publikováno v:
Applied Sciences, Vol 9, Iss 1, p 46 (2018)
This study demonstrates a rapid non-contact ultrasonic inspection technique by visualization of Lamb wave propagation for detecting impact damage in carbon fiber reinforced polymer (CFRP) laminates. We have developed an optimized laser ultrasonic ima
Externí odkaz:
https://doaj.org/article/9561806eae82453495acd773fe63d306
Publikováno v:
Precision Engineering. 70:135-144
We proposed a new primary calibration method of a laser Doppler vibrometer (LDV) using the optical modulated excitation of an electro-optical modulator and validated this approach by comparing mechanical modulated excitation with homodyne laser inter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::edcef8a6d3a6f282bc1e4abb884a85d7
https://doi.org/10.1016/j.precisioneng.2021.01.016
https://doi.org/10.1016/j.precisioneng.2021.01.016
Publikováno v:
Measurement Science and Technology. 34:095003
The reliability of microvibration measurements is important in some applications, such as infrastructure health monitoring. Thus, it is necessary to develop a vibration standard based on ISO16063-11 for microvibrations. In this study, the low-frequen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::526c3c50ce5e5f23d5771b165f24e720
https://doi.org/10.1088/1361-6501/acd570
https://doi.org/10.1088/1361-6501/acd570
Precise extraction of sinusoidal vibration parameters is essential for the dynamic calibration of vibration sensors, such as accelerometers. However, several standard methods have not yet been optimized for large background noise. In this work, signa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26f976657a30ed26aae9291978a9b089
Publikováno v:
Measurement: Sensors, Vol 18, Iss, Pp 100136-(2021)
We propose a novel signal-processing technique to avoid cyclic errors in laser interferometers instead of an elliptical fitting, known as the Heydemann correction. It is based on a simple superposition of background motions to average out the effect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d79830516a901945be07b09c72f8eb5
http://www.sciencedirect.com/science/article/pii/S2665917421000994
http://www.sciencedirect.com/science/article/pii/S2665917421000994
Publikováno v:
Measurement: Sensors, Vol 18, Iss, Pp 100140-(2021)
In this study, we developed an automated, multi-point primary vibration calibration system using a two-axis positioning stage and a laser Doppler vibrometer. The proposed system offers low-cost, convenient, and automated multi-point vibration calibra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ce2fa6476bc387b64b63a225027b317
http://www.sciencedirect.com/science/article/pii/S2665917421001033
http://www.sciencedirect.com/science/article/pii/S2665917421001033